TM 9-2320-209-20-3-2 c. Adjustment (Air Pressure Less Than 105 psi). Soldier A 1. 2. 3. Soldier B 4. 5. 6. Soldier A 7. 8. END OF TASK Open hood. Refer to TM 9-2320-209-10. Using 1 1/16-inch wrench, loosen jamnut (1). Using 13/16-inch wrench, turn adjusting nut (2) 1/4 turn to right to raise air pressure. Tell soldier B when ready. Start engine and run until air pressure gage (3) stops going up and read gage. Refer to TM 9-2320-209-10. If gage reads less than 100 psi, stop engine and do step 3 again. Refer to TM 9-2320-209-10. If air pressure gage (3) reads between 100 and 105 psi, stop engine. Refer to TM 9-2320-209-10. Using 1 1/16-inch wrench, tighten jamnut (1). Make sure that ad- justing nut (2) does not turn. Close hood. Refer to TM 9-2320-209-10. 13-266